Complete List of Regions Potentially Affected by Coastal Flooding from 8–22 July 2026

The Meteorology, Climatology and Geophysics Agency (BMKG) has issued a coastal flood warning. A number of regions across the country are advised to be alert to the potential for tidal flooding from 8 to 22 July 2026. Citing the BMKG’s Instagram account @infobmkg, the Perigee Moon and New Moon phenomena on 14 July 2026 have the potential to increase the maximum sea level. Based on water level data monitoring and tidal predictions, coastal flooding is likely to occur in several coastal areas of Indonesia, including: 9–17 July 2026: Coast of Aceh, Coast of Lhokseumawe. 12–18 July 2026: Coast of North Sumatra, Coast of Medan Belawan, Coast of Medan Labuhan, Coast of Medan Marelan. 13–20 July 2026: Coast of Riau Islands, Coast of Batam. 12–19 July 2026: Coast of Riau Islands, Coast of Karimun. 14–17 July 2026: Coast of West Sumatra, Coast of Padang City, Coast of Padang Pariaman Regency, Coast of Pesisir Selatan Regency, Coast of Agam Regency, Coast of West Pasaman Regency, Coast of Mentawai Islands (Pagai, Siberut and Sipora Islands). 9–19 July 2026: Coast of Jambi, Coast of West Tanjung Jabung, Coast of East Tanjung Jabung. 12–17 July 2026: Coast of Bangka Belitung Islands, Coast of Bangka and Belitung. 11–15 July 2026: Coast of Banten, Northern waters of Serang (Kasemen, Pontang and Tirtayasa Districts). 16 July 2026: Coast of Banten, West Sunda Strait Pandeglang (Labuan District). 12–17 July 2026: Coast of Banten, South Coast of Pandeglang (Cikeusik District), Southern waters of Lebak (Bayah District). 9–16 July 2026: Coast of Jakarta, Kamal Muara, Kapuk Muara, Pluit, Ancol, Kamal, Marunda, Cilincing, Tanjung Priok, Muara Angke, Penjaringan, Kalibaru. 9–16 July 2026: Coast of West Java, Coast of Bekasi Regency and Karawang Regency. 14–18 July 2026: Coast of West Java, Coast of Sukabumi Regency, Coast of Garut Regency, Coast of Cianjur Regency, Coast of Tasikmalaya Regency, Coast of Pangandaran Regency. 11–21 July 2026: Coast of Central Java, Coast of Semarang City, Coast of Demak Regency, Coast of Pekalongan Regency and City, Coast of Batang Regency, Coast of Kendal Regency, Coast of Jepara Regency. 13–18 July 2026: Coast of Central Java, Coast of Brebes Regency, Coast of Tegal City, Coast of Tegal Regency, Coast of Pemalang Regency. 13–16 July 2026: Coast of East Java, East Coast of Surabaya (Sidoarjo, Pasuruan, Probolinggo). 11–17 July 2026: Coast of East Java, Coast of Surabaya Port. 12–19 July 2026: Coast of Bali, South Coast of Bali (Gianyar, Badung, Denpasar, Tabanan, Klungkung, Jembrana). 10–18 July 2026: Coast of West Nusa Tenggara, Coast of Lembar and Bima. 15–19 July 2026: Coast of North Kalimantan, Waters of Tarakan. 13–18 July 2026: Coast of West Kalimantan, A small part of the Kapuas riverbank. 14–20 July 2026: Coast of Central Kalimantan, Coast of Kumai, Coast of Pantai Lunci, Coast of Kuala Jelai, Coast of Kuala Pembuang, Coast of Sampit, Coast of Kapuas Pesisir. 13–18 July 2026: Coast of North Sulawesi, Coast of Sangihe Islands. 14–18 July 2026: Coast of North Sulawesi, Coast of North Bolaang Mongondow, Coast of Bolaang Mongondow, Coast of South Minahasa, Coast of Manado Tua, Coast of Manado. 14–17 July 2026: Coast of North Sulawesi, Coast of Sitaro Islands, Coast of Bitung and Kema, Coast of North Minahasa, Coast of Talaud Islands. 14–16 July 2026: Coast of North Sulawesi, Coast of Southeast Minahasa. 8–20 July 2026: Coast of Maluku, Coast of Ambon, Coast of Central Maluku. 8–22 July 2026: Coast of Maluku, Coast of East Seram. 12–17 July 2026: Coast of Maluku, Coast of Kai Islands. 8–21 July 2026: Coast of Maluku, Coast of Aru Islands. 13–18 July 2026: Coast of Maluku, Coast of Tanimbar Islands. The potential coastal flooding generally impacts community activities around ports and coastal areas, such as loading and unloading activities at ports, activities in coastal settlements, and salt pond and inland fisheries activities. The public is urged to always be vigilant and prepared to anticipate the maximum sea tide and to pay attention to maritime weather information updates from the BMKG.